Only suitable finish for HHH vs. Ambrose should be Brock interfering. I mean, how can you have Ambrose lose cleanly and still look like a threat to Brock? Unless they are going to shock everyone, have Ambrose win the title and maybe do a 4 way at Mania, not many ways you can go.
BTW, 4 Way at Mania between Ambrose, Brock, HHH and Reigns would be amazing.